my father, 62 accidentally took two amoxicillin capsules of 500 mg at once prescribed by dentist for dental problem. he is diabetic and heart patient. Then after he did not take next dose amoxycillin for one time and then continue. No side effects have been seen. will there any problem? The prescribed dose was 15 capsules for 5 days. whether the dose will be complete or not for taking two at once and missed one next dose? please help.